Patents by Inventor Guangwei KAN

Guangwei KAN has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Nickel lithium ion battery positive electrode material having concentration gradient, and preparation method therefor
    Patent number: 10439215
    Abstract: A nickel lithium ion battery positive electrode material having a concentration gradient, and a preparation method therefor. The material is a core-shell material having a concentration gradient, the core material is a material having a high content of nickel, and the shell material is a ternary material having a low content of nickel. The method comprises: synthesizing a material precursor having a high content of nickel by means of co-precipitation, co-precipitating a ternary material solution having a low content of nickel outside the material precursor having a high content of nickel, aging, washing, and drying to form a composite precursor in which the low nickel material coats the high nickel material, adding a lithium source, grinding, mixing, calcining, and cooling to prepare a high nickel lithium ion battery positive electrode material.
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: October 8, 2019
    Assignee: INSTITUTE OF PROCESS ENGINEERING, CHINESE ACADEMY OF SCIENCES
    Inventors: Qiangqiang Tan, Guangwei Kan, Yuxing Xu
  • NICKEL LITHIUM ION BATTERY POSITIVE ELECTRODE MATERIAL HAVING CONCENTRATION GRADIENT, AND PREPARATION METHOD THEREFOR
    Publication number: 20170317344
    Abstract: A nickel lithium ion battery positive electrode material having a concentration gradient, and a preparation method therefor. The material is a core-shell material having a concentration gradient, the core material is a material having a high content of nickel, and the shell material is a ternary material having a low content of nickel. The method comprises: synthesizing a material precursor having a high content of nickel by means of co-precipitation, co-precipitating a ternary material solution having a low content of nickel outside the material precursor having a high content of nickel, aging, washing, and drying to form a composite precursor in which the low nickel material coats the high nickel material, adding a lithium source, grinding, mixing, calcining, and cooling to prepare a high nickel lithium ion battery positive electrode material.
    Type: Application
    Filed: December 15, 2014
    Publication date: November 2, 2017
    Applicant: INSTITUTE OF PROCESS ENGINEERING, CHINESE ACADEMY OF SCIENCES
    Inventors: Qiangqiang TAN, Guangwei KAN, Yuxing XU